Isaac van hagen



(No Mndei.)

I. VAN HAGEN. PRQGESS OF AND APPARATUS FOR MANUFAUTURING STOVE BOARDS.N0. 288,892.

' Patented Nov. 20,1883.

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UNITED STATES PATENT OFFIcE.

ISAAC VAN HAGEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE ADAMS & IVESTLAKEMANUFACTURING COMPANY, OF SAME PLACE.

PROCESS OF AND APPARATUS FOR MANUFACTURING STOVE-BOARDS.

SPECIFICATION forming part of Letters Patent No. 288,892, dated November20, 1883,

Application filed March 27, 1883. (N model.)

Improvements in the Process of and Apparatus for Manufacturing StoveBoards or Plat- I forms, of which the following is a specification.

My invention has special reference to that class of stove-boards whichare made of crystallized tin 5 andfit consists in a method of producingthe same, and in an apparatus preferably used in carrying the saidmethod into effect.

Prior to my invention crystallized tin stoveboards were made in sectionsof, say, four sheets, and while the act of crystallizing small plates isa simple one, it is a difficult matter to perform the same operationupon sheets large enoughsay thirty-four byfortysix inchesto make anon-sectional board, and this I believe was never done until effected byme.

In the ordinary production of crystallized tin, the first operation {touse a technical expression) is to burn the tin, although in fact thesheet is not or should not be burned at all, but the whole surfaceshould be brought to a semi-melted condition. WVhile in this state, thesheet is either plunged into a body of water, or water is dashed orpoured upon it. After the sheet has been burned and the water appliedthe sheet is to be subjected to 1 area of the sheet, whereby to bringthe whole in avoiding by a suitable use of ignitible gas regulating theflame and obtaining a perfect combustion, which latter condition isnecessary to prevent the smoking of the sheet. These difficulties I haveat length succeeded anddistributing over the entire surface of the sheetto be heated numerous gas-jets, each under equal pressure and uniformlymixed with atmospheric air, so as to produce a number of smokelessflames of equal intensity, all adapted to be simultaneously regmlatedand controlled, as hereinafter set forth.

In the further description of my invention which follows, I will referto the apparatus preferably used for conducting my improved process, andwhich is shown in the annexed drawings.

Figure l is an isometrical view of the apparatus. "Figs. 2, 3, 4, and 5are views of do tached details.

Similar letters of reference indicate similar parts in the respectivefigures.

Fig. 1 shows what is usually termed the burning-frame, although the termmelting frame is perhaps more appropriate. The burning-fran1e stands onthe floor, supported on legs a. The greater part of the frame is made ofgas-pipe. A are side pipes, and B gas-supply pipes. C is thegas-regulator, to which the pipes B are connected. The regulator Creceives gas through the pipe c and air through the pipe Z). The air isforced into the regulator from a fan-blower, and is necessary to producethe required heat and a perfect combustion, so as to render theapparatus smokeless. Ordinary city gas or other suitable illuminating orignitible gas may be used.

D are burning-pipes extending across the frame and connecting with theside pipes, A, at a distance of about three inches apart from center tocenter. The pipes D are provided with holes spaced about two andthree-quarters inches apart on either side of the pipe, as shown in Fig.3. The holes are drilled at such an angle as will divert the flame fromcontact with the adjacent pipe, as seen in Fig. 4, and arranged so thata jet from one pipe is not opposed to a jet from another. The jet-holesare about the size of N o. 18 wire.

E E are sheet-iron plates through which the pipes D run. The plates E orequivalent bars or stiffening devices are essential to the apparatus, toprevent the warping or springing of the pipes out of shape by heat. Theplates IOO project above the pipes about three-fourths of an inch, whichis about the distance that the sheet should be held above the top of theburning-frame. There are about five hundred and twenty jets throughoutthe entire area of the frame, which, being plentifully and equallysupplied and mixed with air, produce an intense yet even heat upon thesheet held over and close to them, the sheet deflecting or turning backthe flames upon the pipes.

The regulator O is shown detached in Fig. 2, and receives and mixes theinflowing currents of gas and air. It is necessary that the air must beso regulated as not to extinguish the flame, and by the use of theregulator here shown the full blast from the blower may be turned on andthe flame not extinguished.

Heretofore with apparatus for conducting various processes of burning inthe arts, regulators for mixing gas and air and controlling the flamehave only been applied to individual burners, and not used as hereindescribed viz., one common regulator for a great number of jetsdistributed over a large area. The regulator consists of a cylinderhaving a head, 0, at each end. In the lower head, 0, is a gaspipe, 0,passing into the upper end of the cylinder and reaching about threeinches above the upper side of the air-pipe c. The intention is toeffect a thorough comminglingof the gas with the air and a sufficientpressure of air to force and distribute the mixed gas and air throughoutthe large surface of pipes, thereby giving the necessary blow-pipeeffect to each distinct flame and produce a perfect combustion andsmokeless flame at each jet. By extending the gas-supply pipe 0 abovethe I horizontal air or blast pipe 0, the blast is with a handle. Theholder is used in the manipulation of the sheet during its treatment.

I do not'claim, broadly, in the crystallizing of tin-plate the burningof the tin and treatment with water and acids, as this has been donelong prior to my invention. Neither do I claim, broadly, a gas-pipeburning-frame, nor a regulator for mixing gas and air for the productionof an intense and smokeless flame; but,

Having described my invention, I claim 1. As an improvement in the artof manufacturing crystallized tin plates, the withindescribed process,consisting, first, in igniting a number of 'jets of gas equally mixedwith air at a stated pressure, and applying the entire surface of thesheet at the same instant of time to the series of flames produced bysaid jets, thereby equally reducing the entire surface of the sheet to asemi-melted condition, substantially as set forth, and thereafter treating the sheet with water and acids in a wellknown manner.

2. In an apparatus for the manufacture of crystallized tin plates, aregulator provided with gas and air inlet pipes, combined with a systemof connected and interiorly-conlmunieating perforate and imperforatepipes, and means for preventing the warping or springing of the pipes bychanges of temperature, substantially as set forth.

3. In an apparatus for the manufacture of crystallized tin plates, aregulator provided with gas and air inlet pipes, combined with a systemof pipes and suitable supports constituting a burning-frame, certain ofthe pipes being provided with perforations or apertures set at anglesand arranged to direct the flames away from adjacent pipes and toprevent the opposition of the flames, substantially as set forth.

4. In an apparatus for the manufacture of crystallized tin plates, aframe having asystem of burning-pipes, combined with perforated sheetplates th rough which the said system of pipes passes, for strengtheningthe frame and preventing the warping of the pipes by heat, substantiallyas set forth.

5. A system of connected and interiorly-com municating perforate andimperforate pipes and suitable stiffeners or supports, togetherconstituting a burning-frame, combined with a regulator having gas andair inlet pipes,the gas-pipe extending within the regulator to a pointabove the connection of the air-pipe, whereby the air-blast is brokenand the air distributed throughout the regulator and mixed with the gasfor distribution throughout the burning-frame, substantially as and forthe purpose set forth.

In testimony hereof I hereunto set my hand this 17th day of March, 1883.

ISAAC VAN HAGAN.

Witnesses:

FRED. G. WAITE, WM. MANGLER.

